Clamp.



N. C. HANSEN.

CLAMP.

APPLICATION FILED SEPT.27. 1915.

1,222,204., Patented Apr. 10, 1917.

2 SHEETS-SHEET I.

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N. C. HANSEN.

CLAMP.

APPLICATION FILED SEPT. 27, I915.

Patented Apr. 10, 1917.

2 SHEETS$HEET 2.

a F M w m-mug %TATE% NEILS C. HANSEN, 0F GRAND RAPIDS, MICHIGAN,ASSIGNOR T0 \VILLIAM A. BERKEY FURNITURE COMPANY, OF GRAND RAPIDS,MICHIGAN, A CORPORATION OF MICHIGAN.

CLAMP.

menace.

Specification of Letters Patent.

Patented Apr. it), 191?.

Application filed September 27, 1915. Serial No. 52,861.

To all whom it may concern:

Be it known that I, NnILs C. HANsEN, a citizen of the United States ofAmerica, residing at Grand Rapids, in the county of Kent and State ofMichigan, have invented certain new and useful Improvements in Clamps;and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

This invention relates to a clamping device which is especially adaptedto be used in holding the parts of a frame together in the process ofgluing the corners thereof and .is of especial value in gluing miteredcorners. Heretofore in fastening mitered corners ofa frame, door or thelike together it has been necessary to glue on the members of the frameblocks adjacent the corners thereof so shaped that they were adapted tofurnish a bearing for attachment of the well known screw clamp, theseblocks after the frame had been made being out off and the surfacesfinished, necessitating several operations and adding to the expense. Itis the object and purpose primarily of my invention to provide aclamping means which may be placed around a frame having mitered cornersor any other similar article with like corners, this clamp serving to.hold the members of the frame in rigid position with relation to eachother without the necessity of these former additional operations. Afurther object of the invention consists in the provision of clampingdevices which may be placed around and adjusted to frames of varioussizes. Various other objects and purposes not specifically enumeratedwill also appear as understanding is had of the invention disclosed inthe accompanying drawings, in which;

Figure l is a perspective view illustrating the use of my inventioninthe operation of gluing together the sides and ends of a rectangularframe.

Fig. 2 is a plan view illustrating the use of my invention and securingtogether the sides and ends of a frame in which only part of the cornersare mitered.

Figs. 3 and 1 are plan and side elevations respectively of one elementof the clamping mechanism, one of which is placed alongside each sideand end of the frame.

Fig. 5 is a vertical section taken on the line 55 of Fig. 4:.

Figs. 6 and 7 show in elevation and plan a tie member which is used inconjunction with the side and end members of the clamp shown in Figs. 3and 4.

Figs. 8 and 9 are plan and side elevations respectively of an auxiliaryblock, a plurality of which are used with frames having members ofconsiderable width.

Like reference characters refer to like parts throughout the severalviews of the drawings.

In Fig. l I have shown the clamp applied to a rectangular frame havingsides 1 and ends 2,'the corners being mitered on substantially an angleof 45 degrees as illustrated at 3. Along each side and end of the frameis positioned an extensible member consisting of an inner bar 4 and anouter bar 5, the inner bar being grooved on one face at 6 to receivecorresponding tongues 7 formed on the inner face of the bar 5 wherebythe bars are slidable lengthwise with respect to each other. Bag 5 isprovided with a slot- 8 which extends'nearly the length thereofterminating short of each end, however, through which a pin 9 screwthreaded at its outer end and inserted through bar t passes. A wing nut10 threads on to the outer end of the pin 9 as shown. The outer surfaceof the outer bar 5 is provided with a plurality of projections 11substantially triangular in shape leaving between them a plurality oftriangular notches. A. short block 12 equipped on its inner face withsimilar triangular projections 13 is mounted on the pin 9 between thewing nut 10 and the outer face of bar 5, its projections 13 seating inthe notches of the bar 5. It will be apparent that by operation of thewing nut the bars may be loosened andadjusted to any desired positionand when the wing nut is tightened block 12 seating against the bar 5will hold the parts of the extensible member in rigid relation to eachother.

Each bar a and 5 at its end is provided on its outer face with a notch14, the sides of which in the present construction lie at right anglesto each other. Each bar is further provided with a projection 15, thesides 16 and 17 of which in the present construction also lie at rightangles to each other though it is to be understood that the forma tionof thesides of the notches 14 and of the projection 15 may be varied foruse in securing together the sides of frames which. are not rectangularor lIl which theomem:

bers do not lie at right angles to each other as shown in Fig. 1. Whenthe bars 4 and 5 are of considerable length it is advisable to place astirrup 18 around the bar 4." attachand guide? are sufficient. IAsbefore stated,-.in the use of the clamp;

one of these extension members is located at,

each side of the frame, the sides and ends of which are to begluedtogether, and adjusted so that the length of an ,eXtension which, islocated along the side of the frame and the'other along theend,the-projection 15 of said members engaging with the pro-. jections 20 ofthe tiemelnbers 19 with sides 1 20 bearing against sides 16 ofpro'jectigms 15. A recess 21. is: also formed in thetie the frameoperated upon. Thesetie members are used at all corners except one at;which a. Well known form of screw clamp comprised of spaced apartbar-s22 connected by screws 23 is'used,- the ends. of bars .22

seating in notches l ta-nd bearing against sides ,16 of the projections15. By t'ightening the clamp'all of the membersplaced around the frameare tightenedand drawn very snugly against the frame, in this mannerholding the corners at 3 together against displacement so long as theclamp is fixed thereon.

It is sometimes necessary to glue members.

of a frame in which all of the corners are not mitered corners. in whichthe sides 1 and ends 2? form the frame, two corners 3 being shownsimilar to the mitered corners 3 of the frame in Fig. 1 while the othercorners as shown at 24 are formed by merely abuttingthe ends; of sides1* against one of theends2f. dVith this type of frame but. three of theextension barsfare needed, being placed along thetjwo sides and the oneend which has the mitered corners withthe sides. An auxiliary attach-iment consisting of a block 25 providedwith a stirrup 26 pivotallyattached thereto is placed 'over all end of the side extensionmembers,.the stirrup. being received in the notch 14 and bearing againstthe side '16, thereof, while the'block has. a side.,contactingwi-ththe,side 27" as shown. One tieblock 5 member 19 is used at one miteredcorner and fwid-th of thelside and end members of the frame ,and} these.7 members. 27 are placed against the frame members with the, exten sionme nbers of.; the clainp seatedfin member is a little shorterthan thelength of the frame member against which it is .posi-. tioned: A tiemember. 19. formed asshown,

in Figs; 1 and ;7 and having two projections. 20, is used to tietogether the adjacent ends of two of the extensible members, one of,

width of the members at, the ,corncrsthereof This is shown in Fig.2

the screw clamp previously described at the opposite corner, thisserving to securethe parts of the. frame together and hold them 7 sothat they may be glued. 1 V

I have also provided additional.

be used when the sides and ends of the frame ing firmly against thesides and. Qendsofithc;

frame. It will be apparent tl iatiiirtlris manf, neran eyen pressuremaybe exerted the ;-f,ul1 even though theyare of much greater, widththan the extension clamp members.

The invention, isnotlimited in use to M ta-ngular frames nor to frames.Ofanypar- Q. I, tlcular s ze. In, practice the nvention has memberwhich comes oppos te the corner of as been used in gluing together s desand ends of a table frame which is located belo-jvfhej t p. of the le.nd Ito. W sk-th me i .a-gi 5 I tached; It isof course understood, thatthe inventionmay be utilized in many different ways and that theconstructionmayloe variously modified. Accordingly, I do notwishj Q tobe limited to the specific disclosure "shown 7 f and described butconsider myselfentitled to all modifications inistructurefallingwith};in thescope of theappended claims which define the invention.

1. lira clamp anextenslble member com- "prised of two bars lying, oneagainstjthe flo he one o sa .ba $..h i g ngthw e...

grooves formed on one side in which simif v larly positioned ribs on theother seat, one of saidbars .also having aslot formed lengthwisetherein, a pin secured to! the other bar extending through the slot inthey first a seriesof. mi QI oplioiectionsgon the first bar, a blockformed with plurality of notches adapted to receive the projectionslocated on the pin, ai'nutthreaded on to the @1720 a .end of the pin,and angular projections at I the endsof theextensible membenone on eachbar ,andeXtending in the same direction, substant ally as descr bed v 2.In a clamp, an,extens bleimembercom-5125 prised of two .barslying one.againstgthe other, said bars having coactinglongitudi} W e. and r s:res: a a ent, i ne 1; 's1des, and one of sa d b 1 having.

longitudinal slot therein, a "plurality V of consecutive transverseprojections of the same size and shape on the outer side of said bar, apin passing through the second bar and the slot in the first bar, ablock having a plurality of transverse notches in its inner side adaptedto receive the projections on said first bar, said pin also extendingtherethrough, a nut threaded on to the end of the pin, and a head havinga Width equal to the combined widths of the two bars located at one endof said first bar and provided With a notch having sides located at anangle to each other in its outer side, said head at its end being out atan incline to the Width thereof, said second bar on its inner sideadjacent one end also having a notch With sides located at an angle toeach other and with its end cut at an incline to the Width thereof,substantially as described.

In testimony whereof I aflix my signature.

NEILS C. HANSEN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

0 Washington, D. G.

